2. Today, as I was with my online coaching group, one of my members talked about how much material she picked up for her research. She complained that going through all that data is just too overwhelming. That made me realize that she has let the research data set her agenda. The purpose of the research is to aid you. You use it when there is need for it. The right path I saw was to write the outline of the book first. This is not a fiction book, it has plenty of how-to, so the best way to go about it I saw was to pencil all those questions you expect your potential readers to ask.
3. Don't take just one day. Do it for a couple. Don't write al the same questions over and over again, of course. Write new ones. Now, write those questions in a normal, understandable order. If you e.g. were writing a book about baking, you would want to make it into sections, like types of dough, types of flour, different technikues of mixing etc. (ok, I know nothing about baking, but I do believe you can understand what I mean).
4. Once you do this, decide the order of these sections. Sort them in a sensible way. Every subject has it's own logic, so use it and make the appropriate, logical order. Once you have set up your groups, use your logic again to decide the order of your questions, and giving answers to them. When you get to this, you will probably remember of more questions. Feel free to add them.
5. After all these basic steps, you are ready to start writing your new book. You have the concept, so you can start writing like a UK dominatrix . The moment you do need a research, you can go and look it up. No need to bog down in the mountains of data.